DE69618283D1 - X-ray source with magnetically supported cathode - Google Patents

X-ray source with magnetically supported cathode

Info

Publication number
DE69618283D1
DE69618283D1 DE69618283T DE69618283T DE69618283D1 DE 69618283 D1 DE69618283 D1 DE 69618283D1 DE 69618283 T DE69618283 T DE 69618283T DE 69618283 T DE69618283 T DE 69618283T DE 69618283 D1 DE69618283 D1 DE 69618283D1
Authority
DE
Germany
Prior art keywords
ray source
magnetically supported
supported cathode
cathode
magnetically
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69618283T
Other languages
German (de)
Other versions
DE69618283T2 (en
Inventor
Weston A Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Varian Medical Systems Inc
Original Assignee
Varian Medical Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Varian Medical Systems Inc filed Critical Varian Medical Systems Inc
Application granted granted Critical
Publication of DE69618283D1 publication Critical patent/DE69618283D1/en
Publication of DE69618283T2 publication Critical patent/DE69618283T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/16—Vessels
    • H01J2235/161—Non-stationary vessels
    • H01J2235/162—Rotation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
    • H01J35/1017—Bearings for rotating anodes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Power Engineering (AREA)
  • X-Ray Techniques (AREA)
DE69618283T 1995-06-06 1996-06-04 X-ray source with magnetically supported cathode Expired - Fee Related DE69618283T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/467,242 US5550890A (en) 1995-06-06 1995-06-06 Magnetically supported cathode X-ray source

Publications (2)

Publication Number Publication Date
DE69618283D1 true DE69618283D1 (en) 2002-02-07
DE69618283T2 DE69618283T2 (en) 2002-08-29

Family

ID=23854936

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69618283T Expired - Fee Related DE69618283T2 (en) 1995-06-06 1996-06-04 X-ray source with magnetically supported cathode

Country Status (5)

Country Link
US (1) US5550890A (en)
EP (1) EP0747926B1 (en)
JP (1) JPH09115469A (en)
CA (1) CA2178246A1 (en)
DE (1) DE69618283T2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001190043A (en) * 2000-01-05 2001-07-10 Sankyo Seiki Mfg Co Ltd Magnetically-levitated motor
US7514885B2 (en) * 2005-03-08 2009-04-07 General Electric Company Methods and systems for medical imaging
JP5106789B2 (en) * 2006-05-31 2012-12-26 株式会社日立メディコ X-ray tube apparatus and X-ray CT apparatus
JP4899858B2 (en) * 2006-12-27 2012-03-21 株式会社島津製作所 Envelope rotating X-ray tube device
US7558375B2 (en) * 2007-04-20 2009-07-07 General Electric Company Stationary cathode in rotating frame x-ray tube
DE102011078782A1 (en) * 2011-07-07 2013-01-10 Siemens Aktiengesellschaft Magnetic bearing, method for operating a magnetic bearing and use of a magnetic bearing
JP6877975B2 (en) * 2016-12-01 2021-05-26 キヤノンメディカルシステムズ株式会社 X-ray CT device
CN106504967B (en) * 2016-12-14 2018-01-30 云南电网有限责任公司电力科学研究院 Negative and positive two have the X-ray tube of spinfunction
US10816437B2 (en) * 2017-03-22 2020-10-27 General Electric Company Contactless rotor state/speed measurement of x-ray tube
US10629403B1 (en) * 2018-09-28 2020-04-21 Varex Imaging Corporation Magnetic assist bearing
US20210067023A1 (en) * 2019-08-30 2021-03-04 Apple Inc. Haptic actuator including shaft coupled field member and related methods
EP3872835A1 (en) * 2020-02-28 2021-09-01 Siemens Healthcare GmbH Rotatable x-ray tube
DE102020206939B4 (en) 2020-06-03 2022-01-20 Siemens Healthcare Gmbh x-ray tube

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2111412A (en) * 1928-12-08 1938-03-15 Gen Electric X-ray apparatus
US2121630A (en) * 1936-05-11 1938-06-21 Gen Electric X Ray Corp X-ray apparatus
US4878235A (en) * 1988-02-25 1989-10-31 Varian Associates, Inc. High intensity x-ray source using bellows
US5241577A (en) * 1992-01-06 1993-08-31 Picker International, Inc. X-ray tube with bearing slip ring
US5200985A (en) * 1992-01-06 1993-04-06 Picker International, Inc. X-ray tube with capacitively coupled filament drive
US5274690A (en) * 1992-01-06 1993-12-28 Picker International, Inc. Rotating housing and anode/stationary cathode x-ray tube with magnetic susceptor for holding the cathode stationary
DE69213202T2 (en) * 1992-01-06 1997-01-23 Picker Int Inc X-ray tube with ferrite core filament transformer

Also Published As

Publication number Publication date
EP0747926B1 (en) 2002-01-02
US5550890A (en) 1996-08-27
EP0747926A1 (en) 1996-12-11
DE69618283T2 (en) 2002-08-29
JPH09115469A (en) 1997-05-02
CA2178246A1 (en) 1996-12-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee